it's early sunday morning here in tokyo, and people are actually starting to get used to the dozens of aftershocks that are happening here every day. now, they should get smaller over time, but they could last for years. that's because experts now say the massive quake released enough energy to provide electricity to the city of los angeles for an entire year. >> at the time it was terrifying. i've never felt a quake that strong. you know, my japanese coworkers haven't experienced anything like this, either, in their lifetime. >> reporter: the earthquake that hit japan this morning was actually the 261st aftershock. it was located about 200 miles north of tokyo, but we could definitely feel it here in the city. the ground started shaking, buildings were situation. clearly keeping people here on edge. russ. >> mitchell: ben trace netokyo. take care. thank you very much. attention was focused for most of the day on an explosion at the fukushima nuclear power plant where officials say the containment vessel is intact with no imminent threat of a meltdown. sea water is being pump in to coo